The issue concerns an Information Exposure when decrypting files. A malicious server for a special remote could trick git-annex into decrypting a file that was encrypted to the user's GPG key, potentially exposing encrypted data that was never stored in git-annex. This attack requires the attacker to have control of a server hosting an encrypted special remote used by the victim's git-annex repository. The attacker can use `git annex addurl --relaxed` with an innocuous URL and then send the content of the GPG-encrypted file they wish to have decrypted when the user downloads the content from the special remote.